BS 5400 part 6

BS 5400 part 6

BS 5400 part 6

I've had a request from a fabricator to include some ties between pairs of braced girders as they are concerned about tolerances on straighness which could affect the placing of the permanent formwork panels.They reference table 8 in 5400-6, but I'm having trouble determining the tolerances from this, in particular, I don't see how the inclusion of bracing is accounted for in the equations.Does anyone have experiance of using this document?